Window-ventilator.



No. 833,260. PATENTED OCT. 16, 1906. D. N. SWIFT. WINDOW VENTILATOR.APPLICATION FILED MAY 14, 1906.

Altamey UNITED STATES PATENT OFFICE.

DEAN N. SWIFT,

or IDGWAY, PENNSYLVANIA.

WlNDOW-VENTILATOR.

ence being had therein tot e accompanying drawings. 1

This invention relates to a window-ventilator, and particularly to acasing adapted to be interposed between the rail of the sash and the topor bottom of the windowframe. The invention has for an obgect to rovidea telescoping casing'adapted terior partition curved for a ortion of itslength concentric with the wal of the casing and its upper end divergingfrom said wall, so .as to provide an enlarged discharge-opening andprevent a direct upward flow of the draft,- which would .disturb a shadeor ourtain, and to diffuse the air entering therethrough.

A further object ofthe invention is to provide means for supporting theventilator-casing in position either upon the windowframe or upon thesash therein.

Other and further objects and advantages 'of the invention will behereinafter set forth and the novel features thereof defined by the apended claims. Y

n the drawings, Figure 1 is an elevation of a window with the ventilatorapplied at the top and bottom thereof. Fig. 2 1s a vertical.

The numeral 1 designates a window-frame,

which may be provided with a lower sash 2 and an upper sash 3, the samebeing of any desired construction or configuration. The

ventilator 4 is formed in two sections-tele scoping and slidinglymounted upon each other, so as to be ad ustable for windows of difierentwidths, and each of the se, sections is rovided with an end wall 5,while the inner face of the ventilator is curved, as shown'at'" 6, andprovided with a flat seat'7 at its base. Within the'casing a puma'partition8 is se-. cured and for a portion of its length extends.

Specification of Letters Patent.

Application filed May 14, 1906. Serial No 316,847-

or app icationj to a window-frame and provided with an in- Patented.Oct. 16, 1906.

concentric with the outer wall 6, thus forming a curved passage 9,through which the air passes in entering the room and which prevents anydirect inward or u ward draft.

The upper portion of this partition is deflected from the wall 6, asshownat 10, thus providing an enlarged discharge portion to permit thediffusion of the air and its delivery into the room at a point removedfrom the sash, so that the curtain or shade will not be disturbed by theentering air. The casing is open at its outer face and is rovided with te de ending lug 11, adapte to seat either upon the outerface of the sill12 atf the lower portion of the sash or the outer face of the to rail 13of the upper sash.

in its main features the construction of the ventilator used for the topand bottom of the window are similarexcepting so far as the means forsupporting them in position, and for this purpose the lower ventilatoris provided with a slot 14 in each of its'end walls, terminating in anenlarged opening 15,

through which the head of the screw 16 may be passed'and the ventilatorslid downward until the shank of the screw enters the slot 14. Thismethod of attachment retains the sections of the telescoping casingagainst movement upon each other and also against movement laterally onthe sash, while the lower portion of the casing is held by the, lug Theopening through which the air may enter the casing 11 against suchmovement.

is adapted to be varied by an adjustment of the elevation of the lowerrail 17 of the lower sash, as will be seen in Fig.1. b

he upper ventilator is adapted to mounted upon the rail 13 of theuppersash by means of the plate 18, which, in connection with the lug 11,embraces this rail. It

will be obvious that this plate can be omitted and the casing retainedby the lug 11 and the contact of the top of the casing with thesurfaceof the window-frame.

. i The 0 eration of the invention will be unthecurved' partition todirect the entering current of air is ada ted to secure the mostefiicient re sults,.whi e avoiding drafts in the room adjacent to'the'window, and embodies the same-1n a simple and economicalconstruction. The means for attaching the casing is adapted to hold thesame against any movement relative to the sash oraecidental displacementwhen in use, while either ol the ventilators can he quickly andconveniently removed when found desirable.

I'Iaving now described my invention and set forth its merits, whatlclaim, and desire to secure by Letters Patent, is

1. A window-ventilator coin )rising a oasin provided with end walls andcurved lace,

and a partition extending for a portion of its length. concentric withsaid hire and diverging therefrom at its upper portion to provide anenlarged discharge-opening.

2. A window-ventilator comprising a easing provided with end walls andcurved face, a partition extending for a portion of its lengthconcentric with said lace and diverging therefrom at its upper portion.to provide an enlarged discharge-opeeing, a supportingbase for saidcasing, and a depending lug at one side of said base.

3. A window-ventilator comprising 2, casing provided with end walls andcurved face, a partition extending for a portion of its lengthconcentriowith said face and diverging therefrom at its upper portion toprovide an enlarged discharge-opening, and ieaded securing devicescarried by the frame of the window at each end of said casing andadapted to enter a slot therein.

4. A Window-ventilator comprising a casing formed of telescopingsections each provided with one end wall and with a curved inner faceextending downward to the supporting-base, and a telescoping partitionsecured to the endwall of each section and ex,

tending at its lower portion concentric with the curved wall of thecasing and diverging therefrom at its u per portion.

In testimony whereof I affix my signature in presence of two witnesses.

DEA-N N. SWIFT. Witnesses J. A. OLsoN, S. C. PARSI-IALL.

